Excavating machinery.



G. H. DUNLOP.

EXGAVATING MACHINERY.

APPLICATION FILED JULY 1o, 1909.

\ ooLuMBlA PLANOGRAPH co.. WASHINGTON, D. c.

Patented May 26,1914.

2 SHEETS-SHEET 1.

ATTORNEY G. H. DUNLOP.

BXGAVATING MACHINERY.

APPLIoATIoN FILED JULY 1o, 1909.

, 1,098,146, Patented May 26,1914.

2 SHEETS-SHEET 2.

A TTURIVEY CDLUMBIA PLANDGRAPH Co.. WASHINGTON D c GEORGE HENRY DUNLOROF AUBURN, VICTORIA, AUSTRALIA.

EXCAVATING MACHINERY.

Specification of Letters Patent.

Application led July 10, 1909.

Patented May 26, i914. serial No. 506,967.

To all whom it may concern Be it known that I, GEORGE HENRY Drin- Lor, asubject of the King of Great Britain and Ireland, residing at No. 2ORobinsons road, Auburn, in the State of Victoria, Commonwealth ofAustralia, civil engineer, have invented new and useful Excavatinglilachinery, of which the following is a specifi-V cation.

The present invention relates to improve ments in excavating machineryand deals more particularly with an improved form of scoop. n

The object of the present invention is to provide an improved form ofscoop adapted to be used in connection with excavating machinery andcomprises means for operating same.

The invention consists essentially7 in providing a movable carriage fromwhich the scoop is adapted to be suspended, seconstructed and designedthat the filling, hoisting and dumping of said scoop is accomplished bymeans of three separate ropes connected with suitable operatingmechanism.

lVith these and other objects in view the invention consists in theconstruction and arrangement of parts more fully set forth in thefollowing specification, illustrated in the accompanying drawings andpointed out in the appended claim. p

Referring to thedrawings; Figure l is a side elevation of one embodimentof the invention as applied to a cantaliver cableway conveyer with thescoop shown in filling position by full lines and in dumping position bydotted lines. Fig. 2 is a sectional view over the cutting showing theside struts spaced apart with the scoop being hoisted between them.Figs. 3, 4, 5 and 6 are views showing the scoop in hoisting, conveying,

Vdumping and returning positions respectively, with part of the cable ofthe conveyer from which the scoop carriage is suspended. Fig. 7 is afront view of the movable carriage from which the scoop is suspended.

The invention as illustrated in Fig. l of the drawing, is shown appliedto a braced or cable-way conveyer adapted to span the ground where thescoop is to be filled and extending out over the dump in the well knownmanner. A track-way o5 is built, upon which the conveyer may be movedover the place of excavation. The conveyer C at c4 at'one end of thestruts.

"side plates P are provided,

hoist pulley consists of struts c2 spanning the excavation, a jib orderrick o3 being pivotally mounted A cable c extends from the outer endof the derrick c3 to the farther end of the side struts and serves thedouble purpose of the back tie for the projecting derriclr and thetrackway for the conveying carriage. The conveying carriage K consistsof one or more flanged wheels adapted to run on the cable c. From bothsides of the carriage wheels supporting a beneath the cable o and aroundwhich the hoist-conveying rope passes. Suspended from the carriage K isa hook H which is preferably double (one half to each side vofthecable). IThis hook is pivotally mounted, as for example, on the axle ofthe upper wheelcarriag'e K and hangs down being provided with side slotsits in which the axle ends of an under wheel project. The lower part ofthe hook H is formed with two lugs it, at the lower portion of each halfof the hook. The upper lug 7L is adapted to sustain the loaded scoop andthe lower lug 7a2 to sustain the overturned scoop, as will be hereaftermore fully described.

The scoop S has a cutting edge or mouth at which it is filled, and abowl for holding the material to be carried therein. Pivotally mountedto the outer sides of the scoop S is a bail or bridle B. The bail isprovided near its upper portion with a transverse rod Z and is suspendedby the hoist-conveying rope R3 which passes over a sheave or pulleybloclr l, suitably carried between the carriage K and the bridle B. Thehoist-conveying rope R3 is connected to the scoop by the bail or bridle(as has been described) and passes over a drum c3 carried at the outerend of the jib or crane 03 and from thence over a. similar drum E3 atthe farther end of the strut c2 to the winding engines. By means of thisrope the scoop is hoisted and carried along the cable orftraclr-way c. Atipping rope R2 is attached to the scoop near the top or back and isused mainly for tilting or rotating the scoop when filling and dumping.rIhe other end of this rope passes over a winding drum E2 to theengines. The third main-haul rope R is'attached to the scoop near themouth and is used mainly for fillingy the scoop. This rope passes over awinding drum E and thence to the winding engines. A small loop Z2 isprovided on the back ot the scoop and is adapted to engage with thelower lug when the scoop is in its over-turned position.

The operation of the device is as Jfollows: rEhe scoop lying in thecutting as shown in Fig. l, is hauled forward by the main-haul andtipping ropes R and R2 respectively and so lled. lt is then shifted bythe hoistconveying rope R3 until the bail B strikes at the hook H andrises above the upper lug 7a.. The hook swings back on its pivot and thescoop is lowered until the bail is borne on the upper lug h, thetransverse bar Z resting thereon (see Fig. 4). Then the carriage ishauled outward and upward over the dump where the scoop is over-turnedby the tipping rope R2, and when sul'liciently over-turned for dumping,the loop Z2 on the back of the scoop strikes the hook H just below theupper lug 7i. and forces it outward from the bail so allowing the scoopto drop until the loop rests on the lower lug 71.2, whereby theover-turned scoop is borne until it has been allowed to run backpreferably by gravity, or is hauled by the tipping rope until over thecutting (see Figs. 5 and 6).

I prefer to have separate engines tor operating the tipping andmain-haul ropes and to use them in the manner more particularlydescribed in the specification accompanying Letters Patent No. 825,20()of 1906, save that there is no backward hauling rope in this invention.

llfhile the machine is herewith described as employed for excavating, itwill be understood that it may also be used and is designed for lillingand `tor transporting materials, as for example coal and the like.

Having described my invention what I claim is:

In excavating machinery a scoop provided with a bridle, a mainhaul rope,a tipping rope, a hoist-conveying rope, a cantaliver cableway conveyer,a. carriage on said cableway, a hook suspended from said carriage andhaving lugs thereon, loops on the bridle and scoop to engage with saidlugs-substantially as described.

In testimony whereof I have signed my name to this specification in thepresence ot' two subscribing witnesses.

GEORGE HENRY DUNLOP. `Witnesses BEDLiNG'roN BoDYooM, WILLIAM THOMPSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

